生态系统的数学模型同样表明，多样性并不能保证生态系统的稳定性——事实上恰恰相反。
Mathematical models of ecosystems likewise suggest that diversity does not guarantee ecosystem stability—just the opposite, in fact.
数学模型也揭示了食物网可能是不稳定的，顶级肉食性动物的微小改变会对整个生态系统产生巨大影响。
Mathematical models have also revealed that food webs may be unstable, where small changes of top predators can lead to big effects throughout entire ecosystems.
业务流程模型(业务生态系统、业务流程和流对象)。
Business process models (business ecosystems, business processes, and flow objects.)
一开始，生态学家建立简单的数学模型和微观实验室，他们搞砸了。
In the beginning, ecologists built simple mathematical models and simple laboratory microcosms. They were a mess.
他的团队从超过200个海洋生态系统模型中搜集了超过68000个关于1880年至2007年的海洋单位面积鱼类数量的数据。
His team studied data from more than 200 Marine ecosystem models, which arrived at more than 68, 000 estimates of fish biomass for years ranging from 1880 to 2007.
按照以上建立的计量指标体系，建立了森林生态效益计量的多元线性模型。
Multivariate linear model of measurement of forest ecological benefit was set up according to index system of measurement.
这些方法将影响数据查询速度、森林生态系统空间分析变量和模型的选择、模型尺度转换及空间分析效率。
These techniques will influence speed querying data. variables and models of spatial analyst for forest ecological system selecting. model level conversion and efficiency of spatial analyst.
应用系统论的观点建立了黑泉库区土地生态系统模型，并对系统多因子进行了定量分析。
Using systematic view, the land ecological evaluation model of Heiquan reservoir area is set up, and many factors in system are analysed quantitatively.
GIS是正在被广泛应用并具有强大空间分析能力的高新技术，与生态旅游分区评价模型结合，可充分发挥其地图化表现和空间分析能力。
As a widely used hi-tech with a powerful function of geo-analysis, GIS demonstrated its potential map visualization and spatial analysis in combination with ecological tourism areas evaluation models.
建立了矿区生态环境质量预警指标体系及预警模型。
It also establishes the mining ecological environment quality forecasting index system and the forecasting model.
基于灰色系统理论和矢量投影原理，建立了区域生态环境评价的灰色关联投影模型。
A grey relation projection model for regional eco-environmental quality evaluation is established based on grey system theory and vector projection principle.
基于生态环境质量概念的模糊性和评价指标的不相容性，在模糊物元分析的基础上，结合模糊集理论和欧氏贴近度概念，建立了区域生态环境评价的模糊物元模型。
On the basis of the fuzzy set theory and the concept of Euclid approach degree, a fuzzy matter-element model for assessment of regional eco-environmental quality is established.
这个小组设计了一个沙漠生态系统的模型那个。他们在画图。
This group is describing a project in which they create a model of eco-system, this particular group has designed a desert eco-system.
导出了该模型下输出功率、效率和生态学目标函数的表达式。
The analytical expressions of power output, efficiency and ecological objective function are derived.
论述了水源涵养林的生态效益及其计量方法和模型；
The estimating methods and models, the benefit compensation principles were discussed also.
为了证明本文设计的模型的现实可行性，文章将电子废弃物回收产业链模型与生态系统中的食物链模型进行了对比。
In order to prove that this model is practical and workable, the thesis compared the recovery chain model of electronic waste with food chain in ecosystem.
主要有景观生态学模型和土地利用动态变化模型。
They are mainly Landscape Ecology model and Dynamic Changing model of Land Use.
因此，人们开始研究建立赤潮生态系统动力学模型。
There fore researchers begin to develop dynamic ecological models for red tides.
这就为应用生态学最著名的种群模型来研究其动力学行为奠定了基础。
So it provides research basis on dynamics behavior by using the most famous population model in ecology.
生产力机理模型是当前生产力生态学研究中的热点，而区域尺度转换是全球变化模型研究的关键问题。
Present researches on productivity ecology are focused on the modeling of productivity mechanism, and the regional scaling is the key of the global change modeling.
方法本专题采用的研究方法包括：疾病动态监测、危险因素动态监测、横断面研究、前瞻性观察、生态学比较和模型预测等流行病学方法。
Method The study methods of this project included dynamic disease surveillance, multiple risk factors examinations, cross - sectional and prospective study, and modeling of predictive models, etc.
应用系统论的观点建立了跋山库区土地生态系统模型，并对系统多因子进行了定量分析。
Land ecological model system is set up by using systematic idea, and multi-factors are analysed quantitatively.
随着科学家的研究深入，进一步认识到多物种间相互影响的重要性，在进行渔业管理时，开始应用海洋生态系统多物种模型。
With a deeper research by scientist, the importance of the interaction of multi-species is realized. A marine ecosystem multi-species model is applied to manage fishery.
生物学、生态学、生物化学等应用领域中的许多模型都可以用非线性时滞反应扩散方程来描述。
Many models in various field of applications, such as biology, ecology and biochemistry, can be described by nonlinear reaction-diffusion equations with time delays.
海洋生态系统动力学模型与模拟研究是海洋生态学研究的最重要方面之一。
Marine ecosystem dynamical modelling and simulation study is one of the most important research fields of the marine ecology.
本研究为空间竞争模型的进一步改进和生态学研究植物竞争生长关系提供了新的思路。
The study provided a new approach to deal with the further improvement of spatial competition models and the plant competition growth relationship ecological study.
本文着重构建了城镇生态系统健康评价的指标体系和模糊评价模型，提出了评价标准。
This paper is emphasized to establish integrated assessment indexes system and fuzzy assessment model of urban ecosystem health, to suggest assessment standard.
生态平衡施肥以生态平衡施肥模型为理论基础，从土壤-环境-人类综合考虑出发，以生态型肥料为载体的新体系。
Ecological balanced fertilization is new fertilization system, which is considered from soil-environment-human. Based on the theory of its model and carried by ecological fertilizer.
最后，该文对水热平衡理论和研究方法、水热平衡耦合模型以及荒漠生态系统的水热结构优化模式等未来的研究方向和重点问题作了分析。
At last, the authors analyze the future research directions and research highlights, such as the theory and research methods, coupling model, and optimized water-heat structure of desert ecosystem.
最后，该文对水热平衡理论和研究方法、水热平衡耦合模型以及荒漠生态系统的水热结构优化模式等未来的研究方向和重点问题作了分析。
At last, the authors analyze the future research directions and research highlights, such as the theory and research methods, coupling model, and optimized water-heat structure of desert ecosystem.
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